Optical scanning device and image forming apparatus

(19)

(11)

EP 1 772 279 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.12.2007 Bulletin 2007/50

(43)	Date of publication A2:
	11.04.2007 Bulletin 2007/15

(21)	Application number: 06254946.4

(22)	Date of filing: 25.09.2006

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International Patent Classification (IPC):

B41J 2/44^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

26.09.2005 JP 2005277527
29.11.2005 JP 2005343797
30.11.2005 JP 2005346034

(71)	Applicant: Ricoh Company, Ltd.
	Tokyo 143-8555 (JP)

(72)	Inventors:
	Yamakawa, Takeshi, c/o Ricoh Company Ltd. Tokyo 143-8555 (JP) Yoshizawa, Hiroshi, c/o Ricoh Company Ltd. Tokyo 143-8555 (JP) Shoji, Katsunori, c/o Ricoh Company Ltd. Tokyo 143-8555 (JP) Namba, Masanori, c/o Ricoh Company Ltd. Tokyo 143-8555 (JP)

(74)	Representative: Mounteney, Simon James
	Marks & Clerk 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)

(54)	Optical scanning device and image forming apparatus

(57) An optical scanning device (15) outputs a light beam from a light source through an emission window (18) in an optical housing (13) to scan a surface to be scanned. The optical scanning device (15) includes a shutter member (14) that closes or opens the emission window (18).

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